Share
    Back to Laars Boilers
    Laars logo
    Mid-Tier

    Laars Pennant

    Model Number: PEN

    Versatile boiler for combined home and pool heating.

    88% AFUE
    Hot Water Boiler
    75k - 300k BTU
    Program eligibility requires written confirmation
    (516) 259-1191

    Technical Specifications

    Efficiency (AFUE)88%
    Boiler TypeHot Water Boiler
    BTU Input Range75k - 300k BTU
    FuelSee spec sheet
    VentingSee spec sheet
    Makes Domestic Hot WaterSee spec sheet
    In ProductionYes
    Heat Exchanger Warranty10 years
    Installed Price

    Prices depend on sizing, venting and piping in your home, so we quote every installation.

    Sizing: the right size comes from a room-by-room heat-loss calculation, not the size of the old boiler or a rule of thumb. Oversized boilers short-cycle and waste fuel; steam systems are sized to the connected radiation instead. See how we approach boiler installation.

    Home-Specific Operating Cost Review

    No guaranteed annual savings or payback period

    Historical Use

    Fuel consumption and weather

    Current Rates

    Utility and delivered-fuel prices

    System Design

    Load, piping, controls, and temperatures

    Get Your Custom Quote

    Full Specifications

    Model Number
    PEN
    Efficiency (AFUE)
    88%
    Boiler Type
    Hot Water Boiler
    BTU Input Range
    75k - 300k BTU
    In Production
    Yes
    Parts Warranty
    5 years
    Heat Exchanger Warranty
    10 years

    Specification source not yet linked — figures are being verified against manufacturer data.

    Ideal For

    Homes with pools needing combined heating solution

    Expert Review: Laars Pennant

    The Laars Pennant delivers solid 88% AFUE efficiency in a traditional cast iron package, representing reliable mid-tier performance for Nassau County homes with hot water baseboard heating systems.

    Laars' long manufacturing heritage provides confidence in component quality and parts availability. Our installation teams have serviced Pennant boilers across decades of operation, confirming the platform's durability in Long Island applications.

    For homes in Hicksville, Westbury, and the surrounding communities with existing baseboard systems, the Pennant provides straightforward replacement without system modifications. The cast iron heat exchanger handles the thermal demands of Long Island winters while resisting the wear of seasonal cycling.

    Bradford White's acquisition of Laars strengthens the brand's manufacturing and support resources. Local distributors like F.W. Webb and Sid Harvey's stock Pennant parts, ensuring rapid service when needed.

    The Pennant's atmospheric burner design provides reliable ignition in basement installations, and the boiler's accessible components simplify annual maintenance.

    Value proposition: The Pennant represents an excellent choice for homeowners prioritizing proven cast iron reliability at mid-tier pricing, particularly in applications where condensing technology's premium isn't justified.

    Key Features & Technology

    Steel fire-tube design

    Pool and spa compatible

    Oil or gas burner

    Wide capacity

    American made

    Advantages

    • Versatile heating and pool
    • Good capacity range
    • Fire-tube durability
    • Competitive pricing

    Considerations

    • 88% AFUE no rebates
    • Pool application focus
    • Less home heating recognition

    Sizing & Installation Notes

    Hot water boilers like the Pennant are sized from a room-by-room heat-loss calculation. We never match the old boiler's size — oversized units short-cycle, waste fuel and wear out years early.

    Every Laars installation starts with a free in-home assessment covering the heat-loss calculation, venting and chimney condition, and gas or oil supply sizing. Learn more about our boiler installation process, or see current rebate and incentive programs that may apply.

    Warranty & Protection

    Parts Warranty

    5 years

    Heat Exchanger

    10 years

    Our Guarantee

    100% Satisfaction

    All Laars boiler installations by Home+ Air & Heat include our 1-year workmanship warranty, covering labor and any installation-related issues.

    Compare the Laars Lineup

    Model Efficiency BTU Range Fuel Heat Exchanger Warranty
    Pennant (this model) 88% AFUE 75k - 300k BTU — 10 years
    Mascot FT 95% AFUE 80k - 250k BTU — 10 years
    NeoTherm 96% AFUE 80k - 500k BTU — 10 years

    See the full Laars brand page for lineup context, or browse the Best Hot Water Boilers 2027 guide to compare across brands.

    Frequently Asked Questions

    Ready for a Quote?

    Get a free, no-obligation quote for Laars Pennant installation in Nassau County.

    (516) 259-1191

    More Laars Boilers

    Explore other boiler models from Laars.

    View All Laars Boilers

    Compare Boiler Brands

    See how Laars compares to other top boiler manufacturers.

    Compare Alternatives

    Similar Boiler Models to Compare

    Other hot water boilers with similar efficiency ratings from different brands.

    Hot Water
    AFUE
    87%
    Tier
    flagship

    $3,000 - $5,500

    View Details
    Hot Water
    AFUE
    87%
    Tier
    mid-tier

    $5,500 - $9,000

    View Details
    Hot Water
    AFUE
    86.1%
    Tier
    mid-range
    View Details
    Hot Water
    AFUE
    86%
    Tier
    premium

    $5,000 - $8,500

    View Details